In the Roman numeral system, a system that uses letters to represent numerals, I is the equivalent of one. Two is written as II, and three is equal to III. A letter cannot appear more than three times in succession.
More »

The Roman numeral IX represents the number 9. The "I" represents the number 1, and the "X" represents the number 10. The fact that "I" is on the left side of "X" means it must be subtracted from the "X," so IX becomes 10...
More »

The Roman numeral for 6 is VI, where V represents 5 and I is 1. When a symbol of lower value appears after a larger-value symbol, the values are added to get the corresponding Arabic number. In this case, VI is 5 plus 1,...
More »

In the Roman numeral system, a system that uses letters to represent numerals, I is the equivalent of one. Two is written as II, and three is equal to III. A letter cannot appear more than three times in succession.
More »